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1.9
MC-1: Mu lti Co m m u n ic a tio n s Mo d u le
The MC-1 multi communications module provides additional ports in any RTU configuration. This
module has three independent serial ports. Ports 1 and 2 are fixed as RS232C while Port 3 can be
loaded with a plug-in option board.
This module consumes power from the +5 VDC bus on the backplane. Up to five MC-1 modules can
be installed in any I/O slot of a 4, 6 or 12 slot backplane. An RTU can have up to 16 communications
ports.
MC-1 P a rt Nu m b e rs
The MC-1 is available with one port option as detailed below.
Ordering Information
Part No.
MC-1-
P
P
Options:
P
Option Port 3 Type
0= Not Fitted
R= Radio, V.23 FSK
P= 2-Wire Line, V.23 FSK
S= Serial RS232/RS485
M= 4-Wire Line, V.23 FSK
Example:
MC-1-R
MC-1 with radio option port
MC-1 Mo d u le LEDs
Three groups of four (4) LEDs show the status of ports 1 2 and 3. Each port has Tx, Rx, RTS and CD
LEDs in a vertical group.
MC-1 LED
Description
OK
ON when module is functioning OK
Tx
ON when port is transmitting
Rx
ON when port is receiving
RTS
Request to send. Set ON to begin transmitting
CD
Carrier detect. ON while a communications signal is detected.
WD
Processor Watchdog Timer. Set ON when the processor is reset.
DR1, DR2,
T1, T2
Not used